Shell built-in command shopt extglob options

Introduction

The shopt command allows you to set optional parameters for the shell.

shopt [-PSU] [optname ...]

-S turns on an option.

-U turns off an option.

-p lists all the options that can be set.

Extglob Options

If the EXTGLOB option is turned on, the shell will enable pattern matching. Reference to Shell pattern matching

See if the EXTGLOB option is on (default is OFF)

$ shopt Extglobextglob off

Turn on the EXTGLOB option

$ shopt-s Extglob

Check whether the EXTGLOB option is turned on at this

$ shopt extglob   Extglob on

Turn off the EXTGLOB option

$ shopt-u Extglob

Instance

Move all files and directories under the directory to the backup directory.

3 files and two directories in the current directory

$ lsdir1  dir2  file1  file2  file3

Create a new backup directory

$ mkdir-p Backup

Move other files and directories other than the backup directory to the backup directory

$ mv! (Backup) backup/

View Results

$ lsbackup$ ls backup/dir1  dir2  file1  file2  file3

Delete all files or directories at the beginning of the file in the current directory

$ lsbackup  dir1  dir2  file1  file2  file3$ rm-rf file[1-3]$ lsbackup  dir1  Dir2

Move in addition to the Dir1 directory and the File1 file to the backup directory

$ mv! (dir1|file1|backup) backup/$ lsbackup  dir1  file1$ ls backup/dir2  file2  file3

Other requirements also need to be extrapolate in combination with shell pattern matching.

Shell built-in command shopt extglob options